In my case, pretty well documented. UHF Community Repeater, and a VHF
public safety repeater. After replacing everything else, replace the LMR
and
the recieve issues go away - no more noise introduced.
google "lmr cable repeater" and you will see some more.
Works great on base stations, just not on duplex situations.
Don't take your organs to heaven,
heaven knows we need them down here!
Be an organ donor, sign your donor card today.
----- Original Message -----
From: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
To: <towertalk@contesting.com>
Sent: Friday, July 16, 2010 7:53 PM
Subject: Re: [TowerTalk] LMR-900
>
>
> On 7/16/2010 8:08 PM, Blake Bowers wrote:
>> There is a school of thought out there that many subscribe
>> to, myself included, that will not use LMR cables for
>> long runs on a repeater, due to the noise that tends to be
>> generated.
>>
>
> I've never seen it to be a problem. Is this something they are afraid
> of, or something they have experienced and documented.
> If some one did have a problem, was it water getting in the coax. I've
> had that problem even with double shielded cables.
>
> The largest problem I ever had was with grounded EHS. Every time it'd
> move in the thimbles the noise would over ride a 50 watt mobile just 2
> miles out. Of course rubbing an 8" screwdriver on the guy line would do
> the same.
>
> The only problems I've had with LMR cables was when the LMR-400UF rubbed
> through the jacket on the top of the tower and when the power dividers
> leaked water through the N-connectors into the LMR-400UF.
>
> Getting water in at a repeater is highly unlikely as the coax connector
> is recessed into the bottom of the antenna and protected from the
> elements.
>
> I wouldn't hesitate to use it although for repeaters we can usually find
> 7/8" Heliax or larger for a low price or even free. In that case I'd opt
> for the Heliax.
>
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